2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef __MPLS_DISP_DPO_H__
17 #define __MPLS_DISP_DPO_H__
19 #include <vnet/vnet.h>
20 #include <vnet/mpls/packet.h>
21 #include <vnet/dpo/dpo.h>
22 #include <vnet/mfib/mfib_types.h>
25 * A representation of an MPLS label for imposition in the data-path
27 typedef struct mpls_disp_dpo_t
30 * required for pool_get_aligned.
31 * memebers used in the switch path come first!
33 CLIB_CACHE_LINE_ALIGN_MARK(cacheline0);
36 * Next DPO in the graph
41 * The protocol of the payload/packets that are being encapped
43 dpo_proto_t mdd_payload_proto;
46 * RPF-ID (if this is an mcast disposition)
48 fib_rpf_id_t mdd_rpf_id;
51 * Number of locks/users of the label
58 fib_mpls_lsp_mode_t mdd_mode;
62 * @brief Assert that the MPLS label object is less than a cache line in size.
63 * Should this get any bigger then we will need to reconsider how many labels
64 * can be pushed in one object.
66 _Static_assert((sizeof(mpls_disp_dpo_t) <= CLIB_CACHE_LINE_BYTES),
67 "MPLS Disposition DPO is larger than one cache line.");
70 * @brief Create an MPLS label object
72 * @param payload_proto The ptocool of the payload packets that will
73 * be imposed with this label header.
74 * @param rpf_id The RPF ID the packet will aquire - only for mcast
75 * @param mode The LSP mode; pipe or uniform
76 * @param dpo The parent of the created MPLS label object
78 extern void mpls_disp_dpo_create(dpo_proto_t payload_proto,
80 fib_mpls_lsp_mode_t mode,
81 const dpo_id_t *parent,
84 extern u8* format_mpls_disp_dpo(u8 *s, va_list *args);
88 * Encapsulation violation for fast data-path access
90 extern mpls_disp_dpo_t *mpls_disp_dpo_pool;
92 static inline mpls_disp_dpo_t *
93 mpls_disp_dpo_get (index_t index)
95 return (pool_elt_at_index(mpls_disp_dpo_pool, index));
98 extern void mpls_disp_dpo_module_init(void);